A low-light-emitting-angle high-luminance ultraviolet (UV) light-emitting diode (LED) nail lamp structure and an LED light source module thereof are provided. The UV LED nail lamp structure includes a housing and an LED light source module. The LED light source module is provided in the housing and has a plurality of UV LEDs, wherein the light-emitting angle of each UV LED ranges between 25° and 80°. The UV LED nail lamp structure features high luminance and enhanced lighting effect.本創作為一種低發光角度高照度之紫外光LED指甲燈結構及其LED光源模組,其包括:殼體以及LED光源模組。殼體內設有LED光源模組,LED光源模組具有複數顆紫外光LED,且每一紫外光LED之出光角度係介於25°至80°間。藉由本創作之實施,可以提升紫外光LED指甲燈結構之光照度,使其達到更佳之光照效果。
